2 * Copyright (c) 2004-2005 The Regents of The University of Michigan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
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14 * this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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32 * Isa Fake Device implementation
35 #include "base/trace.hh"
36 #include "dev/isa_fake.hh"
37 #include "mem/packet.hh"
38 #include "mem/packet_access.hh"
39 #include "sim/builder.hh"
40 #include "sim/system.hh"
44 IsaFake::IsaFake(Params
*p
)
47 if (!params()->retBadAddr
)
48 pioSize
= p
->pio_size
;
50 memset(&retData
, p
->retData
, sizeof(retData
));
54 IsaFake::read(PacketPtr pkt
)
56 assert(pkt
->result
== Packet::Unknown
);
58 if (params()->retBadAddr
) {
59 DPRINTF(Tsunami
, "read to bad address va=%#x size=%d\n",
60 pkt
->getAddr(), pkt
->getSize());
61 pkt
->result
= Packet::BadAddress
;
63 assert(pkt
->getAddr() >= pioAddr
&& pkt
->getAddr() < pioAddr
+ pioSize
);
64 DPRINTF(Tsunami
, "read va=%#x size=%d\n",
65 pkt
->getAddr(), pkt
->getSize());
66 switch (pkt
->getSize()) {
67 case sizeof(uint64_t):
70 case sizeof(uint32_t):
71 pkt
->set((uint32_t)retData
);
73 case sizeof(uint16_t):
74 pkt
->set((uint16_t)retData
);
77 pkt
->set((uint8_t)retData
);
80 panic("invalid access size!\n");
82 pkt
->result
= Packet::Success
;
88 IsaFake::write(PacketPtr pkt
)
90 if (params()->retBadAddr
) {
91 DPRINTF(Tsunami
, "write to bad address va=%#x size=%d \n",
92 pkt
->getAddr(), pkt
->getSize());
93 pkt
->result
= Packet::BadAddress
;
95 DPRINTF(Tsunami
, "write - va=%#x size=%d \n",
96 pkt
->getAddr(), pkt
->getSize());
97 pkt
->result
= Packet::Success
;
102 BEGIN_DECLARE_SIM_OBJECT_PARAMS(IsaFake
)
104 Param
<Addr
> pio_addr
;
105 Param
<Tick
> pio_latency
;
106 Param
<Addr
> pio_size
;
107 Param
<bool> ret_bad_addr
;
108 Param
<uint8_t> ret_data
;
109 SimObjectParam
<Platform
*> platform
;
110 SimObjectParam
<System
*> system
;
112 END_DECLARE_SIM_OBJECT_PARAMS(IsaFake
)
114 BEGIN_INIT_SIM_OBJECT_PARAMS(IsaFake
)
116 INIT_PARAM(pio_addr
, "Device Address"),
117 INIT_PARAM(pio_latency
, "Programmed IO latency"),
118 INIT_PARAM(pio_size
, "Size of address range"),
119 INIT_PARAM(ret_bad_addr
, "Return pkt status BadAddr"),
120 INIT_PARAM(ret_data
, "Data to return if not bad addr"),
121 INIT_PARAM(platform
, "platform"),
122 INIT_PARAM(system
, "system object")
124 END_INIT_SIM_OBJECT_PARAMS(IsaFake
)
126 CREATE_SIM_OBJECT(IsaFake
)
128 IsaFake::Params
*p
= new IsaFake::Params
;
129 p
->name
= getInstanceName();
130 p
->pio_addr
= pio_addr
;
131 p
->pio_delay
= pio_latency
;
132 p
->pio_size
= pio_size
;
133 p
->retBadAddr
= ret_bad_addr
;
134 p
->retData
= ret_data
;
135 p
->platform
= platform
;
137 return new IsaFake(p
);
140 REGISTER_SIM_OBJECT("IsaFake", IsaFake
)